CN110448013A - A wearable device fixing belt and wearable device - Google Patents

Abstract

The present application provides a wearable device fixing strap and a wearable device. The wearable device fixing strap includes a support frame, and the support frame includes a drive mechanism, a control mechanism and a linkage mechanism, wherein the control mechanism is electrically connected to the drive mechanism, and the drive The mechanism is drivingly connected with the link mechanism, and the control mechanism controls the drive mechanism to drive the link mechanism to extend or shorten along the extending direction of the wearable device fixing belt, so that the length of the wearable device fixing belt can be adjusted. When the user wears the wearable device with the wearable device fixing belt, the control mechanism can be used to control the length of the wearable device fixing belt, thereby improving the wearing comfort, especially for the wearable device with detection function, when the wearable device detects When it is necessary to tighten the fixing strap of the wearable device, the technical solution of the present application can improve the convenience and accuracy of detection, and can improve the user experience.

Description

A wearable device fixing belt and wearable device

technical field

The present application relates to the technical field of wearable devices, in particular to a wearable device fixing belt and a wearable device.

Background technique

Wearable devices generally refer to tiny electronic devices that can be worn on the body to go out for activities. They can be used independently or as portable accessories for mobile terminals. Certain wearable devices can be worn through a fixing strap, for example, a smart watch or a wristband can be worn on a user's wrist through a fixing strap. Commonly used fixing straps are mostly flexible belt-shaped structures. During use, the fixing strap itself is connected into a closed loop to surround the user's upper arm, wrist and other wearing parts, thereby fixing the wearable device on the user's body. Taking a smart watch as an example, the fixing strap of the smart watch generally includes a fixing strap body and a buckle connected to the fixing strap body, and the buckle is connected to itself or connected to the fixing strap body to close the fixing strap body into a loop. The body of the fixing belt is generally made of metal, leather or plastic materials, and its common structures are multi-beaded belts, perforated belts, braided belts, etc.; the buckles are generally made of metal or plastic materials, and its common structures include buckles and pin buckles. , buckle and so on.

During the wearing process of smart watches and wristbands, in order to ensure the wearing comfort of the user, there must be a certain gap between the fixing belt and the user's wrist, so as to prevent the fixing belt from tightening the user's wrist for a long time causing discomfort. In the current smart watch or bracelet products, there are many sensors used to detect the user's heart rate or blood pressure. Such sensors are generally installed on the back cover of smart watches and bracelet products. When detecting heart rate or blood pressure, In order to improve the detection accuracy, the sensor is required to be close to the user's wrist. However, due to the gap between the fixing belt and the user's wrist, the fit between the sensor and the wrist will be reduced, which will lead to the detection accuracy of smart watches and bracelet products. reduce. And because the several types of fixing straps of the above structure are inconvenient when adjusting the length, if the method of manually tightening the fixing straps to improve the fitting degree of the sensor is used during the detection process, the detection process will be complicated and the reliability will be reduced. The convenience of use of wearable device products reduces the user experience of users.

Contents of the invention

The present application provides a wearable device fixing belt and a wearable device, which can improve the detection accuracy of the wearable product while ensuring the wearing comfort of the wearable product, and improve user experience.

In the first aspect, the technical solution of the present application provides a wearable device fixing strap, the wearable device fixing strap includes a supporting frame, and the supporting frame includes a driving mechanism, a control mechanism and a linkage mechanism, wherein the control mechanism and the driving mechanism are electrically connected to each other. Connection, the drive mechanism is connected with the link mechanism, and the control mechanism controls the drive mechanism to drive the link mechanism to extend or shorten along the extension direction of the wearable device fixing belt, so that the length of the wearable device fixing belt can be adjusted. When the user wears the wearable device with the wearable device fixing belt, the control mechanism can be used to control the length of the wearable device fixing belt, thereby improving the wearing comfort, especially for the wearable device with detection function, when the wearable device detects When it is necessary to tighten the fixing strap of the wearable device, the technical solution of the present application can improve the convenience and accuracy of detection, and can improve the user experience.

When setting up the supporting frame specifically, the fixing belt of the wearable device can have a fixing belt body, and the supporting frame is connected to the fixing belt body. Specifically, the driving mechanism is installed on the fixing belt body, and the driving mechanism has a linear output end for outputting linear motion. , the linear output end is connected with a driving rod, and the driving rod moves linearly with the linear output end. The end of the driving rod away from the linear output end is connected to the link mechanism to drive the link mechanism to expand and contract. The link mechanism includes multiple sets of link assemblies connected in sequence;

Each connecting rod assembly includes a first connecting rod and a second connecting rod. The first connecting rod and the second connecting rod are hinged in the middle to form an X-shaped structure. In any adjacent two groups of connecting rod mechanisms, the first connecting rod and the second connecting rod A second link in an adjacent link assembly is hinged to form a complete linkage. Among the multiple sets of connecting rod assemblies, the connecting rod assembly connected to the driving rod is the first connecting rod assembly, and one end of the first connecting rod of the first connecting rod assembly is slidingly hinged with the driving rod, that is, the above-mentioned first connecting rod can be opposite to the The driving rod slides, and can also rotate relative to the driving rod, and the hinge shafts of the first connecting rod and the second connecting rod in the first connecting rod assembly are installed on the fixing belt body. In this embodiment, the straight-line output end of the drive mechanism drives the lever to move linearly, and the lever drives the first link of the first link assembly to move, then it can drive a plurality of link assemblies connected to the first link assembly together. action, thereby driving the supporting frame to extend or shorten, so as to adjust the length of the wearable device fixing belt.

When specifically realizing the sliding hinge between the shifting rod and the first connecting rod, the shifting rod can have a bar-shaped hole extending along the extending direction of the wearable device fixing belt, and the first connecting rod of the first connecting rod assembly has a Sliding column adapted to the shaped hole, and the sliding column is slidably installed in the bar-shaped hole. In this embodiment, the sliding column can slide along the bar-shaped hole, so as to adapt to the displacement generated when the first connecting rod rotates. In another embodiment, the strip-shaped hole can be arranged on the first connecting rod, and the sliding column can be arranged on the driving rod, so that the sliding hinge between the driving rod and the first connecting rod can also be realized.

When specifically setting up the drive mechanism, the specific type of the drive mechanism is not limited, as long as the drive mechanism can have a linear output end, it can output linear motion. For example, the drive mechanism can be a linear motor mechanism, a magnetic drive mechanism, a traction mechanism, a screw Mechanism or rack and pinion mechanism, you can choose according to product requirements.

In order to improve the wearing comfort of the wearable device fixing belt, in the embodiment of the present application, the wearable device fixing belt also includes a flexible protective layer, and the flexible protective layer is covered on the outside of the supporting frame. Therefore, when the user wears the wearable device, In contact with the flexible protective layer of the wearable device fixing belt, the wearing comfort is better.

When specifically setting the above-mentioned flexible protective layer, the material of the flexible protective layer is not limited, for example, it can be rubber or silica gel with elasticity, or a braided belt with stretchability, and the flexible protective layer needs to have certain elasticity to adapt to the elongation of the supporting frame and shortened.

In order to control the operation of the driving mechanism, the wearable device fixing belt further includes a control button, which is connected to the control mechanism and can control the driving mechanism to drive the link mechanism to extend or shorten. In this technical solution, the expansion and contraction of the wearable device fixing belt can be controlled by using the physical buttons arranged on the wearable device fixing belt.

In a second aspect, the technical solution of the present application also provides a wearable device, the wearable device includes a device body and the wearable device fixing strap in any of the above technical solutions, and the wearable device fixing strap can be fixed to the device body. The fixing belt of the wearable device can use a driving mechanism to adjust the length of the fixing belt of the wearable device, and the entire fixing belt of the wearable device is evenly stretched, which can improve wearing comfort, improve detection accuracy, and improve user wearing experience.

When specifically connecting the above-mentioned device body and the wearable device fixing belt, one end of the wearable device fixing belt can be detachably connected to the device body, so as to be convenient for wearing the wearable device; or the two ends of the wearable device fixing belt can be connected It is detachably connected with the device body, so that it is convenient to replace the wearable device fixing strap. On the one hand, when the wearable device fixing strap is damaged, the user can only replace the wearable device fixing strap, thereby reducing maintenance costs; on the other hand, the user can according to Choose and replace the appropriate wearable device fixing strap to wear according to preferences and needs.

There are no specific limitations on the detachable connection between the above-mentioned wearable device fixing belt and the device body. In an optional embodiment, the wearable device fixing belt can be snapped into the device body, so that the installation and removal process is more convenient. Moreover, the structure is relatively simple, which is beneficial to improving the comfort of the user wearing the wearable device.

Specifically, when the wearable device fixing belt is connected to the device body, the wearable device fixing belt can also be electrically connected to the device body, so that the device body can be used to supply power to the wearable device fixing belt, and control the action of the driving mechanism, thereby using the device The main body controls the expansion and contraction of the wearable device fixing belt. Specifically, one end of the detachable connection between the device body and the wearable device fixing belt also has a first power supply terminal, and the wearable device fixing belt has a second power supply terminal adapted to connect with the first power supply terminal. The power supply terminal, the first power supply terminal may be a pogo pin, or the second power supply terminal may be a pogo pin, or both may be elastic pins. At least one of the first power supply terminal and the second power supply terminal is a pogo pin, which can better absorb installation tolerances, thereby improving the connection reliability between the first power supply terminal and the second power supply terminal, and making it difficult to disconnect the electrical connection.

In order to control the work of the driving mechanism, a control button can also be arranged on the device body, and the control button is connected with the control mechanism, which can control the driving mechanism to drive the link mechanism to extend or shorten. In this technical solution, the physical buttons arranged on the device body can be used to control the expansion and contraction of the wearable device fixing belt.

Another way is to use the device body to control the expansion and contraction of the wearable device's fixing belt. A virtual button connected to the control mechanism can also be provided on the device body to control the drive mechanism to drive the linkage mechanism to extend or shorten.

Another way is to use the device body to control the expansion and contraction of the wearable device's fixing belt. It can also electrically connect the control mechanism of the wearable device's fixing belt to the device body, and use the built-in degree of the device body to automatically control the expansion and contraction of the wearable device's fixing belt. Yes, when the device body detects an instruction to shorten the fixing strap of the wearable device, the control mechanism controls the driving mechanism to drive the link mechanism to shorten; when the device body detects an instruction to extend the fixing strap of the wearable device, the control mechanism controls the driving mechanism to drive The linkage is extended. Thus, the intelligent adjustment of the length of the wearable device fixing belt is realized.

In order to better realize the intelligent adjustment of the length of the wearable device's fixing strap, a pressure sensor can also be set on the device body or the wearable device's fixing strap to detect the pressure between the wearable device and the user. The result control tightens the wearable device securing strap or stops tightening the wearable device securing strap, or loosens the wearable device securing strap or stops loosening the wearable device securing strap.

In the embodiment of the present application, the tightening and loosening process of the wearable device fixing belt can also be used as a prompt signal, so that the control mechanism of the wearable device fixing belt is electrically connected with the device body. When the wearable device detects the prompt message , the control mechanism controls the drive mechanism to open, so that the fixing belt body is tightened. In this embodiment, the optionality of the prompt message of the wearable device can be enriched, so that the user can distinguish the type of the prompt message.

Description of drawings

Fig. 1a is a structural schematic diagram of a watch strap provided by the prior art;

Fig. 1b is a structural schematic diagram of another watch strap provided by the prior art;

Fig. 1c is a structural schematic diagram of another watch strap provided by the prior art;

FIG. 2 is a schematic structural diagram of a wearable device in an embodiment of the present application;

FIG. 3 is a schematic structural diagram of another wearable device in an embodiment of the present application;

Fig. 4 is a schematic diagram of the driving mechanism driving link structure in the embodiment of the present application;

Fig. 5 is a schematic diagram of the length adjustment of the wearable device fixing belt in the embodiment of the present application;

FIG. 6 is a schematic diagram of an end connection portion of a wearable device fixing belt according to an embodiment of the present application;

Fig. 7 is a schematic diagram of the end connection part of the device body of the embodiment of the present application;

Figures 8a to 8d are schematic diagrams of the installation and removal process of the wearable device fixing belt on the device body in the embodiment of the present application;

FIG. 9 is a schematic diagram of an end connection portion of a wearable device fixing belt according to an embodiment of the present application;

FIG. 10 is a schematic diagram of an end connection portion of a device body according to an embodiment of the present application.

Reference signs:

01-fixing belt; 02-buckle;

10-equipment body; 11-second buckle;

12-push button; 13-first power supply terminal;

20-wearable device fixing belt; 21-supporting frame;

211-driving mechanism; 2111-driving lever;

212-connecting rod mechanism; 2121-connecting rod assembly;

2122-the first connecting rod; 2123-the second connecting rod;

2124-hinge shaft; 22-fixed belt body;

23 - the first buckle; 24 - the second power supply terminal.

Detailed ways

In order to make the purpose, technical solution and advantages of the application clearer, the application will be further described in detail below in conjunction with the accompanying drawings.

The terms used in the following examples are for the purpose of describing particular examples only, and are not intended to limit the application. As used in the specification and appended claims of this application, the singular expressions "a", "an", "said", "above", "the" and "this" are intended to also Expressions such as "one or more" are included unless the context clearly dictates otherwise.

Reference to "one embodiment" or "some embodiments" or the like in this specification means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the present application. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in other embodiments," etc. in various places in this specification are not necessarily All refer to the same embodiment, but mean "one or more but not all embodiments" unless specifically stated otherwise. The terms "including", "comprising", "having" and variations thereof mean "including but not limited to", unless specifically stated otherwise.

Please refer to Figure 1a, which is a schematic diagram of the structure of a fixing belt in the prior art. The fixing belt 01 in Figure 1a is a multi-bead belt structure, which is composed of multiple links connected into chains, and is mostly used with buckles. Figure 1a The buckle 02 in is a common buckle structure, which closes the two ends of the fixed belt body through its own connection; when adjusting the closed length of the fixed belt body, the straps need to be disassembled and assembled, and the Using special tools, the assembly and disassembly process is cumbersome, and the smallest unit of length adjustment is the length of a belt grain, so it is difficult to accurately adjust the closed length of the fixing belt body.

Please refer to Figure 1b, which is a structural schematic diagram of another fixing belt in the prior art. The fixing belt in Figure 1b is a perforated belt with a common structure, generally made of leather material, and the fixing belt body 01 is provided with multiple belt holes. It needs to be used with a pin buckle. The buckle 02 shown in Figure 1b is a common pin buckle structure, and the two ends of the fixing belt body are closed by connecting it with the belt hole on the fixing belt body; the fixing belt of this structure When adjusting the closed length of the fixed belt body, the smallest unit of length adjustment is the length between two belt holes, and it is also difficult to accurately adjust the closed length of the fixed belt body.

Please refer to Figure 1c, which is a structural schematic diagram of another fixing belt in the prior art. The fixing belt shown in Figure 1c is a braided belt with a common structure, generally made of metal wire or chemical fiber material, and is mostly used with a buckle. The buckle 02 shown in Fig. 1c is a common buckle structure, and the two ends of the fixing belt body are closed by pressing the fixing belt body; the fixing belt of this structure can realize the precise adjustment of the closed length of the fixing belt body, However, it is necessary to use one hand to perform steps such as inserting the fixing belt body into the buckle, tightening the fixing belt body, and pressing the buckle with one hand during the adjustment, and the adjustment process is relatively difficult.

The above three currently common watch fixing straps, when applied to non-smart watch products, can all play the role of fixing the non-smart watch product on the user's wrist to meet the daily use needs of non-smart watch products; however, for smart watch products As far as watches or smart bracelet products are concerned, since smart watches and smart bracelet products mostly have the function of measuring the user's heart rate or blood pressure, during the measurement process, in order to improve the gap between the fixed belt and the user's wrist, the measurement accuracy is reduced. The problem is that the fixing belt needs to be tightened so that the sensors installed in the smart watch and smart bracelet are close to the user's wrist. Because the fixing belts of the above three structures are inconvenient when adjusting the length, it is impossible to balance wearing comfort and detection Accuracy reduces the convenience of use of wearable device products and reduces the user experience of users.

Please refer to Figure 2 and Figure 3, Figure 2 is a schematic structural diagram of a wearable device in the embodiment of the present application, and Figure 3 is a schematic structural diagram of another wearable device in the embodiment of the present application; the wearable device includes a device body 10 and a wearable device fixing strap 20 connected to the device body 10, the wearable device fixing strap 20 includes a supporting frame 21, and the supporting frame 21 includes a control mechanism (not shown), a driving mechanism 211 and a link mechanism 212, the above-mentioned The control mechanism is electrically connected to the drive mechanism 211, and is used to send a control signal to the drive mechanism 211; the above-mentioned drive mechanism 211 is drivingly connected to the linkage mechanism 212, and is used to drive the linkage mechanism 212 to be fixed along the wearable device according to the control signal sent by the control mechanism. The length direction of the belt 20 is stretched to adjust the length of the wearable device fixing belt 20 . In the embodiment of the present application, the wearable device fixing belt 20 is connected with the device body 10 and closed into a closed ring structure, so as to surround the user's wrist, upper arm and other wearing parts. Use the driving mechanism 211 to control the expansion and contraction of the link mechanism 212 to adjust the length of the wearable device fixing belt 20, which is convenient for the user to adjust the wearable device fixing belt 20 to improve wearing comfort; The length of the wearable device fixing belt 20 makes the device body 10 attach to the human body; when the wearable device completes the detection, the length of the wearable device fixing belt 20 is extended so that the device body 10 and the human body maintain a set gap to improve wearing comfortable. Therefore, the embodiments of the present application can improve the detection accuracy of the wearable product and improve user experience while ensuring the wearing comfort of the wearable product.

In a specific embodiment, the wearable device fixing belt 20 can be made into a belt-like structure, and the two ends of the wearable device fixing belt 20 are respectively connected to the device body 10 . Thereby, the structure of the wearable device fixing belt 20 can be simplified, and the purpose of surface flatness of the wearable device fixing belt 20 can also be achieved without the need for buckles and other structures, so as to improve the fixing of the wearable device due to the buckle protruding from the wearable device when wearing the fixing belt. The problem of wearing discomfort caused by the surface of the belt 20 is beneficial to improve the wearing comfort of the user.

In order to automatically adjust the distance between the two connecting ends, the driving mechanism 211 is also connected with a control mechanism, and the driving mechanism 211 can drive the link mechanism 212 to extend along the extending direction of the wearable device fixing belt 20 under the control of the control mechanism. Or shorten the movement to adjust the length of the wearable device fixing strap 20 . In specific implementation, the control mechanism can be independently arranged in the wearable device fixing belt 20, for example, a control chip connected to the drive mechanism 211 can be set in the wearable device fixing belt 20; the control mechanism can also be integrated in the device body 10, For example, the drive mechanism 211 is signal-connected to the device body 10 and receives the control signal of the device body 10; similarly, the power supply mechanism of the drive mechanism 211 can be independently installed in the wearable device fixing belt 20, or can be provided by the power supply mechanism of the device body 10. The drive mechanism 211 is powered.

During the specific use of the wearable device fixing belt 20 provided by the embodiment of the present invention, when the wearable device needs to be detected, the control mechanism can control the driving mechanism 211 to drive the link mechanism 212 along the extending direction of the wearable device fixing belt 20 The length is shortened to reduce the circumference of the ring structure formed by the closure of the wearable device fixing belt 20 and the device body 10, so that the device body 10 is close to the user's wearing position and the detection accuracy of the wearable device is improved; when the wearable device When no detection is required, or after the measurement process is over, the driving mechanism 211 can be controlled by the control mechanism, so that the driving mechanism 211 drives the link mechanism 212 to increase the length along the extending direction of the wearable device fixing belt 20, so as to increase the wearable device fixing band 20. The perimeter of the ring structure formed by the closure of the belt 20 and the device body 10, thereby maintaining a certain gap between the wearable device and the user's wearing part, improving the wearing comfort of the wearable device, and realizing the automatic adjustment of the wearing tightness of the fixed belt. Adjustment can improve the detection accuracy of wearable products while ensuring the wearing comfort of wearable products, and improve the user experience. Of course, when the user is using the wearable device, the length of the wearable device fixing belt 20 can be adjusted at any time according to his own comfort, thereby improving the wearing comfort, and the adjustment process can realize stepless adjustment, that is, the wearable device can be realized Fine-tuning of wearing tightness.

Specifically, as shown in FIG. 2 and FIG. 3 , in the embodiment of the present application, the wearable device may be a wrist-worn device such as a bracelet or a smart watch, and the wearable device fixing strap 20 may be connected to the device body 10 and closed into a Closed ring structure, the inner circumference of the ring structure can range from 160mm to 220mm to suit most users.

Specifically, the user can adjust the wearable device fixing belt 20 to a certain initial length, so as to wear the wearable device comfortably. Afterwards, in the use scenario where the wearable device needs to be detected, for example, the user needs to monitor blood pressure and heart rate changes during exercise, or when the wearable device detects the user's heart rate and blood pressure according to the preset time, the control mechanism controls the driving mechanism 211 Open, the link mechanism 212 is tightened, so that the device body 10 is close to the wearing part of the user, and the detection accuracy is improved; after the detection process is completed, the control mechanism controls the drive mechanism 211 to close, and the link mechanism 212 relaxes and returns to the initial state. length to ensure its wearing comfort.

In addition, in addition to the above usage scenarios where wearable devices need to be detected, the tightening-loosening process of the link mechanism 212 of the wearable device fixing belt 20 can also be used as an interaction mode between the wearable device and the user. The interaction between some wearable devices and users is often realized through images, sounds, and vibrations. Since the tightening and relaxation of the wearable device fixing belt 20 and the vibration of the device body 10 have different perceptions on the user, some wearable devices have different effects on the user. In the usage scenario of reminding, the prompt mode can be set as the tightening-relaxation of the wearable device fixing band 20, for example, the email reminder can be set as the tightening-relaxation of the wearable device fixing band 20, and the alarm clock reminder can be set Vibrate to facilitate the user to distinguish. Thereby enriching the interaction between wearable devices and users.

Specifically, the control mechanism can adjust the driving mechanism 211 to drive the link mechanism 212 to move according to the circumference of the wearable device fixing belt 20 worn by the user; , to detect the pressure of the device body 10 or the wearable device fixing belt 20 on the body part of the user wearing the wearable device, and the drive mechanism 211 controls the wearable device fixing belt 20 to tighten, and when the pressure reaches a preset threshold, it is determined The fixing belt has been tightened. At this time, the control mechanism controls the driving mechanism 211 to stop working, so as to avoid excessive tightening of the fixing belt and cause wearing discomfort; since the circumference of the body parts of different users wearing the wearable device may be different, the control mechanism adopts the above-mentioned After the control method, the wearable device provided by this application can be applied to multiple different users; The detected pressure sensor can be arranged inside the device body 10, or inside the wearable device fixing belt 20. Specifically, the pressure sensor can be made to face the side of the body part where the user wears the wearable device, so as to improve the detection effect and reliability.

The control mechanism can also control the driving mechanism 211 according to different measurement requirements, so as to control the degree of tightening or loosening of the wearable device fixing belt 20 by controlling the driving mechanism 211; According to the requirements of different fit levels, the control mechanism can preset a variety of corresponding motion strokes of the drive mechanism 211 for different measurement requirements, so as to adjust the tightness of the wearable device fixing band 20; taking the smart watch product as an example, in When a smart watch product performs heart rate measurement and blood pressure measurement, if the sensors in the smart watch require different fitting degrees for the two measurements, the control mechanism can set different motion strokes of the driving mechanism 211 for the heart rate measurement and blood pressure measurement, When the smart watch performs heart rate measurement and blood pressure measurement respectively, the driving mechanism 211 shrinks the driving linkage mechanism 212 according to the corresponding control information of the control mechanism, and then the sensor has different degrees of attachment to the user's wrist in the two different measurements. In order to improve the accuracy of each measurement process separately.

In other embodiments, the control mechanism can also be manually controlled by the user to control the drive mechanism 211; in specific implementation, the control mechanism can include a physical control set on the device body 10 or the fixing belt for controlling the operation of the drive mechanism 211 buttons, or include virtual buttons set in the application program of the device body 10 for controlling the work of the driving mechanism 211, or include those set in the application programs of other mobile terminals such as mobile phones connected to the wearable device for controlling A virtual switch for the driving mechanism 211 to work; this control method is suitable for occasions where the fixing belt 20 of the wearable device needs to be adjusted manually, and the user can control the tightness of the fixing belt according to his or her own needs.

Please refer to FIG. 3 , when specifically setting the wearable device fixing belt 20 in this application, the wearable device fixing belt 20 includes a fixing belt body 22 , a driving mechanism 211 and a link mechanism 212 installed on the fixing belt body 22 . Wherein, the driving mechanism 211 is drivingly connected with the link mechanism 212. The driving mechanism 211 has a linear output end, which can realize linear translation transmission. sports. The side of the driving rod 2111 away from the linear output end is connected to the linkage mechanism 212. Specifically, the linkage mechanism 212 includes multiple sets of linkage assemblies 2121, and the multiple sets of linkage assemblies 2121 are hingedly connected in turn. As shown in FIG. 3 , each link assembly 2121 includes two links, respectively a first link 2122 and a second link 2123, the middle part of the first link 2122 and the middle part of the second link 2123 are hinged, It becomes an X shape. In the adjacent two groups of link assemblies 2121, the first link 2122 is hinged to the adjacent second link 2123, that is, among the plurality of link assemblies 2121 connected in sequence, the link assembly 2121 connected to the driving lever 2111 Taking the first link assembly as an example, the link assemblies 2121 along the direction away from the lever 2111 are respectively the first link assembly, the second link assembly, the third link assembly...the N-1th link assembly and the N link assemblies, where N is a positive integer, one end of the first link 2122 of the first link assembly is slidingly hinged to the driving rod 2111, and the other end is hinged to the second link of the second link assembly. One end of the second link 2123 of the link assembly is a free end, and the other end is hinged with the first link of the second link assembly; one end of the first link of the second link assembly is connected with the first link of the first link assembly The two connecting rods are hinged, and the other end is hinged with the second connecting rod of the third connecting rod assembly. One end of the second connecting rod of the second connecting rod assembly is hinged with the first connecting rod of the first connecting rod assembly, and the other end is connected with the third connecting rod. The first connecting rod of the connecting rod assembly is hinged, and so on, until the end of the Nth connecting rod assembly away from the N-1th connecting rod assembly is a free end. The hinge shaft 2124 of the first link and the second link in the first link assembly is mounted on one end of the fixing belt body 22, and the hinge shaft 2124 of the first link and the second link of the Nth link assembly is mounted on The other end of the belt body 22 is fixed, so that the distance between the above two hinge shafts 2124 can be adjusted.

Please refer to FIG. 4 and FIG. 5 , wherein FIG. 4 shows a schematic view of the drive link structure of the driving mechanism 211 ; FIG. 5 shows a schematic view of the length adjustment of the wearable device fixing strap 20 . The length adjustment process of the wearable device fixing belt 20 is as follows: the lever 2111 moves linearly along the first direction, driving the first link 2122 of the first link assembly to rotate around the hinge axis 2124, because the first link 2122 and the lever 2111 Therefore, the first connecting rod 2122 rotates relative to the driving rod 2111, and can also slide along the second direction, so that the normal operation of the mechanism can be maintained. With the movement of the first link 2122, the entire link mechanism 212 can be driven to move. Specifically, when the first link 2122 and the second link 2123 approach each other along the length direction of the wearable device fixing band 20, the wearable The device fixing belt 20 is elongated; when the first connecting rod 2122 and the second connecting rod 2123 are away from each other along the width direction of the wearable device fixing belt 20, the wearable device fixing belt 20 is shortened, as shown in FIG. 5 in the embodiment Three length states of the wearable device fixing band 20 . In the embodiment of the present application, the length adjustment of the wearable device fixing belt can be realized by using the linear output end of the driving structure. The shortening is beneficial to improve the wearing comfort of the user when adjusting the fixing belt 20 of the wearable device, and is also beneficial to prevent the position of the device body 10 from shifting easily during the adjustment process.

Please refer to FIG. 4 and FIG. 5 , when the sliding connection between the driving rod 2111 and the first connecting rod 2122 is realized, the driving rod 2111 can have a strip-shaped hole, and the above-mentioned strip-shaped hole extends along the extending direction of the wearable device fixing belt 20 , specifically can extend along the second direction shown in FIG. 4 , the first link 2122 of the first link assembly has a sliding post adapted to the above-mentioned bar-shaped hole, and the sliding post is slidably installed in the bar-shaped hole. When the driving rod 2111 drives the first connecting rod 2122 to move, the sliding column slides in the bar-shaped hole, so that the driving rod 2111 can move linearly along the first direction shown in Figure 4, and the first connecting rod 2122 rotates relative to the driving rod 2111 , can also slide in the second direction, so that the normal operation of the mechanism can be maintained. Of course, in another specific embodiment, the first link 2122 of the first link assembly can also have a strip-shaped hole, and the strip-shaped hole extends along the extending direction of the wearable device fixing band 20, specifically along the above-mentioned first link. Extending in two directions, the driving lever 2111 has a sliding post adapted to the bar-shaped hole, and the sliding post is slidably installed in the bar-shaped hole. When the driving rod 2111 drives the first connecting rod 2122 to move, the sliding column slides in the bar-shaped hole, so that the driving rod 2111 can move linearly along the first direction, and the first connecting rod 2122 can rotate relative to the driving rod 2111, and can also move along the first direction. Sliding in two directions, so that the normal operation of the mechanism can be maintained.

When the above-mentioned drive mechanism 211 is specifically set, the drive mechanism 211 can be realized in various ways, such as linear motor mechanism, magnetic drive mechanism, traction mechanism, lead screw mechanism, rack and pinion mechanism, etc. Structure and principle:

In one embodiment, the driving structure can adopt a linear motor mechanism, the linear motor has a linear output shaft, the driving rod is installed on the above-mentioned linear output shaft, and the linear output shaft drives the driving rod to move linearly, thereby driving the connecting rod structure to elongate or shorten.

In another embodiment, the driving mechanism can adopt a magnetic driving structure, and the magnetic driving structure includes two electromagnets, one of which is a fixed electromagnet, and the other electromagnet can be a movable electromagnet. The two electromagnets attract or repel each other, so as to control the movable electromagnet to approach or move away from the fixed electromagnet, wherein the fixed electromagnet is fixedly installed with the fixed belt body. The driving rod is installed on the movable electromagnet, and the movable electromagnet drives the driving rod to move linearly, thereby serving as the linear output end of the driving mechanism, and driving the connecting rod structure to elongate or shorten.

It should be noted that, in the above-mentioned drive mechanism, there is no limitation on the fixing method of the fixed electromagnet and the fixed belt body, and there is no limitation on the fixing method of the movable electromagnet and the driving rod. Specifically, clamping, bonding, welding, threaded connection or Fixed by riveting and other methods. The shape of the iron core of the electromagnet is not shown, but can be specifically single-core, U-shaped, E-shaped and the like.

In another embodiment, the driving mechanism may be a traction mechanism, the traction mechanism includes a driving motor and a traction wire, the first end of the traction wire is fixedly connected to the rotating shaft of the motor, and the second end is fixedly connected to the driving lever. After the motor is turned on, the traction line can be wound on the shaft with the rotation of the shaft to shorten the distance between the two ends of the traction line, and then drive the lever at the second end of the traction line to move towards the direction close to the motor shaft. The driving rod at the two ends moves away from the rotating shaft, and the traction mechanism also needs to include an elastic reset part. When the pulling wire drives the driving rod to move, the elastic restoring part stores energy and can release energy to make the driving rod at the second end of the pulling wire move away. The direction of the rotating shaft moves, so as to realize the straight-line movement of the driving rod, and drive the connecting rod structure to elongate or shorten.

It should be noted that, in the above-mentioned driving mechanism, there is no limitation on the fixing method of the driving motor and the fixing belt body, and there is no limitation on the fixing method of the traction wire and the driving rod. Specifically, methods such as bonding, welding, threaded connection or riveting can be used for fixing. . A plurality of traction lines can be arranged between the driving motor and the driving lever to improve the stability of the moving of the driving lever; in order to improve the stability of the moving of the driving lever, a guiding groove for moving the driving lever can also be provided.

In another embodiment, the driving mechanism is realized by a lead screw transmission mechanism. Specifically, the lead screw transmission mechanism includes a drive motor. , the nut moves linearly along the screw. The driving rod is installed on the above-mentioned nut, so that the linear movement of the driving rod can be realized, thereby driving the connecting rod structure to elongate or shorten.

It should be noted that, in the above-mentioned driving mechanism, there is no limitation on the fixing method of the driving motor and the fixing belt body, and there is no limitation on the fixing method of the nut and the driving rod. Specifically, methods such as bonding, welding, threaded connection or riveting can be used for fixing.

In yet another embodiment, the drive mechanism is realized by a rack and pinion mechanism, specifically, it includes a drive motor and a gear connected to the drive motor. The gear is meshed with the rack, and the drive motor drives the gear to rotate, and then drives the rack to move linearly. If the driving rod is installed on the rack, the linear movement of the driving rod can be realized, thereby driving the connecting rod structure to elongate or shorten.

It should be noted that, in the above-mentioned driving mechanism, there is no limitation on the fixing method of the driving motor and the fixing belt body, and there is no limitation on the fixing method of the rack and the driving rod. Specifically, methods such as bonding, welding, threaded connection or riveting can be used for fixing. .

Please refer to FIG. 3 , the wearable device fixing belt 20 further includes a flexible protective layer (not shown in the figure) covering the outside of the support frame 21 . In this embodiment, the flexible protective layer can improve the comfort of the user wearing the wearable device fixing belt 20 . The specific material of the flexible protective layer is not specifically limited. For example, it can be rubber, silica gel or braided tape. In a specific embodiment, the above rubber can be thermoplastic polyurethane elastomer rubber (Thermoplastic polyurethanes, TPU for short), rubber and silica gel The hardness of the braid should be between 65A and 75A to have better elasticity and strength. Since the braided belt is a braided product, its weaving pattern can make the braided belt have a certain degree of flexibility. In addition, it can also be woven with elastic materials to improve The stretchability of the braid. Users can also choose a wearable device fixing belt 20 with a flexible protective layer of suitable material according to their needs. On the one hand, it can adapt to the preferences of different users, and on the other hand, it can also enable users to avoid allergies and choose suitable materials for wearing.

Please refer to Fig. 6 and Fig. 7, wherein Fig. 6 is a schematic diagram of the end connection part of the wearable device fixing belt according to the embodiment of the present application, and Fig. 7 is a schematic diagram of the end connection part of the device body according to the embodiment of the present application; in one embodiment, One end of the wearable device fixing belt 20 is detachably connected to the device body 10, and the other end is fixedly connected to the device body 10, so that the user can wear and remove the wearable device without making the user pass through the wearable device fixing belt 20 and the device body. 10-stroke ring structure, and then use the stretchability of the wearable device fixing belt 20 to adjust to the wearing state. Therefore, the stretching stroke of the wearable device fixing belt 20 in this embodiment does not need to be set too large, and the detachable structure can be used first. To wear the wearable device, and then use the support frame 21 of the wearable device fixing belt 20 to adjust to a comfortable state, which is conducive to improving the mechanism stability and reliability of the support frame 21 of the wearable device fixing belt 20 . In addition, both ends of the wearable device fixing strap 20 can be detachably connected to the device body 10. In this embodiment, it is also convenient to replace the wearable device fixing strap. When the wearable device fixing strap 20 is old or damaged When there is a problem, it is convenient to replace the wearable device fixing belt 20; in addition, the user can choose a variety of styles of wearable device fixing belt 20 according to his own preferences, and replace them, thereby improving user experience.

Specifically, please continue to refer to FIG. 6 and FIG. 7 , the device body 10 and the wearable device fixing belt 20 can be detachably connected by snapping, specifically, the wearable device fixing belt 20 can have a first buckle 23 , the device body 10 has a second buckle 11 adapted to the first buckle 23, wherein the second buckle 11 can be connected with a push button 12, and the push button 12 can push the second buckle 11, so that the second buckle 11 is disengaged from the first buckle 23, so as to realize the removal of the first buckle 23 and the second buckle 11. Please refer to FIG. 8a to FIG. 8d, which show the installation and disassembly process of the wearable device fixing belt 20 and the device body 10 in the embodiment of the present application. When installing the wearable device fixing belt 20 and the device body 10, as shown in FIG. 8a Insert the end of the wearable device fixing belt 20 into the device body 10, so that the first buckle 23 is engaged with the second buckle 11, as shown in FIG. 8b, to realize the installation of the wearable device fixing belt 20 and the device body 10 ; When removing the wearable device fixing belt 20 and the device body 10, as shown in FIG. The device fixing belt 20 and the device body 10 , as shown in FIG. 8 d , realize the disassembly of the wearable device fixing belt 20 and the device body 10 . In this embodiment, the detachable connection between the wearable device fixing belt 20 and the device body 10 is realized by means of clamping. Convenience.

Please refer to Figure 9 and Figure 10, wherein Figure 9 is a schematic diagram of the end connection part of the wearable device fixing belt according to the embodiment of the present application, and Figure 10 is a schematic diagram of the end connection part of the device body according to the embodiment of the present application; in a specific embodiment, The driving mechanism 211 of the wearable device fixing belt 20 is electrically connected to the device body 10. When at least one end of the wearable device fixing belt 20 is fixedly connected to the device body 10, the electrical connection structure between the driving mechanism 211 and the device body 10 can be positioned One end of the wearable device fixing strap 20 is fixedly connected with the device body 10 . When the wearable device fixing band 20 is detachably connected to the device body 10 , the electrical connection structure between the driving mechanism 211 and the device body 10 may also be located at one end of the wearable device fixing band 20 detachably connected to the device body 10 . Specifically, when specifically setting the electrical connection between the drive mechanism 211 and the device body 10, the first power supply terminal 13 can be set at the end of the device body 10, and the second power supply terminal 24 can be set at the end of the wearable device fixing band 20. , the first power supply terminal 13 is adapted to the second power supply terminal 24, when the wearable device fixing belt 20 is connected to the device body 10, the connection between the first power supply terminal 13 and the second power supply terminal 24 can be realized, thereby realizing the driving mechanism 211 Electrical connection with the device body 10 .

Specifically, when the first power supply terminal 13 and the second power supply terminal 24 are provided, the first power supply terminal 13 may be a pogo pin, the second power supply terminal 24 may be a pogo pin, or both may be pogo pins. The pogo pin has a precise spring structure inside, so that it can absorb more installation tolerances and improve the reliability of the electrical connection between the driving mechanism 211 and the device body 10 when the wearable device fixing belt 20 is connected to the device body 10 .

Please continue to refer to FIG. 9 and FIG. 10 , the end of the device body 10 is provided with a second buckle 11 and two first power supply terminals 13 , and the two first power supply terminals 13 are located on both sides of the second buckle 11 ; A first buckle 23 and two second power supply terminals 24 are provided at the end of the wearable device fixing band 20 , and the two second power supply terminals 24 are located on both sides of the first buckle 23 . In this embodiment, the power supply terminals are located on both sides of the buckle. On the one hand, the layout is more reasonable, so that the buckle is located in the middle of the connection between the device body 10 and the wearable device fixing belt 20, which is conducive to improving the stability of the connection and wearing comfort. On the other hand, setting the two power supply terminals separately can reduce the corrosion of the power supply terminals and improve the service life and electrical connection reliability of the wearable device fixing band 20 .

The embodiment of the present invention describes the control method of the wearable device provided by the embodiment of the present invention in combination with specific application scenarios. The wearable device products used in the following application scenarios all take smart watches as examples, and all adopt the wearable device provided in the above embodiments. Device fixing belt, the control mechanism of the wearable device fixing belt is set in the device body, and the user can control the wearable device fixing belt through the smart watch or the related application installed in the mobile phone connected to the smart watch; the back cover of the smart watch The site has sensors for detecting the user's heart rate and blood pressure.

When the user needs to measure heart rate and blood pressure, for example, when the user wears the smart watch and performs sports, such as running, cycling, mountain climbing, swimming and other sports, the user needs to know that his heart rate and blood pressure will change with the exercise time and distance. The smart watch is installed with the corresponding motion monitoring application program, which can measure the heart rate and blood pressure according to the predetermined time interval, and can also measure the heart rate and blood pressure according to the predetermined exercise distance. Heart rate and blood pressure measurements can be performed according to predetermined altitude changes; of course, a single heart rate or blood pressure measurement can also be performed according to user instructions.

After the user wears the smart watch, by adjusting the length of the wearable device fixing belt, the circumference of the ring structure formed by the device body and the wearable device fixing belt is at an appropriate wearing length, so that it will not be too loose or too tight; And in the application program of the smart watch, you can choose to automatically measure heart rate and blood pressure according to the predetermined time interval, exercise distance change, and altitude change, and start exercising; then the application program changes according to the predetermined time interval and predetermined exercise distance. , the predetermined altitude change, sending driving information to the driving mechanism, and controlling the movement of the driving mechanism, so as to adjust the circumference change of the ring structure formed by the device body and the wearable device fixing belt.

Specifically, taking the measurement according to a predetermined time interval as an example, the user first selects to measure blood pressure and heart rate according to the time interval in the application program, and selects the required time interval, such as 5 minutes, 10 minutes, etc., and then selects the start The time of measurement, such as starting measurement immediately, or after a predetermined time, after the user arrives at a predetermined location, etc.; after the measurement process starts, the application starts timing, and when the preset time interval is reached, the application Send the control information to the drive mechanism to control the tightening of the wearable device's fixing belt, then the wearable device's fixing belt is tightened, and the sensor set on the back cover of the smart watch is closely attached to the user's wrist, and starts to detect heart rate and blood pressure, and Send the heart rate and blood pressure information to the application program. After obtaining the heart rate and blood pressure information, the application program sends control information to the drive mechanism to control the loosening of the wearable device's fixing belt, and then the wearable device's fixing belt is relaxed to complete a detection process; the application program According to multiple detection results, the change process of the user's heart rate and blood pressure with exercise time can be obtained, and relevant data can be generated so that the user can know the change of the user's heart rate and blood pressure with exercise time.

The process of measuring the distance change and altitude change of the application program according to the predetermined distance is the same as the above-mentioned measurement according to the predetermined time interval. The application program can be set according to the positioning module set in the smart watch or the terminal device connected to the smart watch The positioning module obtains the user's location information to calculate the user's exercise distance and altitude change, so as to obtain the change process of the user's heart rate and blood pressure with the exercise distance and altitude change.

A pressure sensor for detecting the pressure generated by the wearable device strap on the user's wrist may also be arranged in the back cover of the device body or the wearable device strap. Specifically, the above-mentioned rear cover may be a contact surface between the part of the wearable device except the fixing strap and the user's wrist. Optionally, an appropriate pressure threshold can be preset in the application program. Then, during the above measurement process, when the wearable device fixing strap is tightened, the pressure sensor detects the pressure generated by the wearable device fixing strap on the user's wrist When the preset pressure threshold is reached, the control mechanism controls the drive mechanism to stop moving, so that the fixing belt of the wearable device will not be further tightened, so as to avoid excessively tightening the user's wrist and causing wearing discomfort.

In addition to the above-mentioned automatic measurement method to detect the user's heart rate and blood pressure, it can also be detected by manually controlling the driving mechanism according to the user's needs. The control button for controlling the driving mechanism is set in the application program. When the user has measurement needs, open The application program installed in the wearable device, or open the application program installed in the mobile phone connected to the wearable device, and click the control button to make the application program send control information to the driving mechanism, so that the driving mechanism drives the wearable device fixing belt Tighten or relax.

In the application program, different control information can be set according to the heart rate measurement and blood pressure measurement. The motion strokes of the driving mechanism corresponding to the two control information are different, so that the sensor of the smart watch can be connected with the user's wrist when measuring the heart rate and blood pressure. Different fit tightness can improve the accuracy of the smart watch when measuring heart rate and blood pressure respectively.

When the user does not need to measure heart rate and blood pressure, the smart watch can also prompt the user by controlling the tightening and relaxing of the wearable device's fixing band. Specifically, when the wearable device detects a prompt message, the control mechanism controls the drive mechanism to turn on, so that the wearable device's fixing belt is tightened, thereby sending a reminder to the user; optionally, the wearable device's fixing belt can be tightened multiple times , or tighten and relax, or tighten and relax and repeat many times. The above prompt messages are various, such as system messages and application program messages of the wearable device, or system messages and application program messages of a mobile phone connected to the wearable device. For example, when a user sends and receives emails through a smart watch, or a terminal such as a mobile phone or a tablet computer connected to a smart watch, in the application program for sending and receiving emails, set the reminder of an important contact's email to trigger the receipt of the fixed belt of the wearable device. Tighten-relax command, when the email sending and receiving application program receives the email from the important contact, it will send tightening and loosening control information to the drive mechanism at a certain frequency, so that the fixed belt will be tightened and loosened regularly to prompt the user Check emails; this prompt method is different from common sound, vibration, and display prompts, and can improve the interaction performance between the smart watch and the user.

The above is only the specific implementation of the application, but the scope of protection of the application is not limited thereto. Anyone familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the application, and should cover Within the protection scope of this application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims (16)

1. a kind of wearable device fixing belt, which is characterized in that including support frame, the support frame include driving mechanism, Control mechanism and link mechanism, in which:

The control mechanism is electrically connected with the driving mechanism, and the driving mechanism is connect with the linkage transmission, described Driving mechanism drives the link mechanism prolonging along the wearable device fixing belt according to the control instruction of the control mechanism It stretches direction elongation or shortens, to adjust the length of the wearable device fixing belt.

2. wearable device fixing belt according to claim 1, which is characterized in that further include fixed band body, the drive Motivation structure is installed on the fixed band body, and the driving mechanism has straight line output end, and the straight line output end, which is connected with, to be dialled Bar, the driving lever are connect far from one end of the straight line output end with the link mechanism, and the link mechanism includes successively connecting The multiple groups link assembly connect；

The link assembly includes hinged first connecting rod and second connecting rod, and the first connecting rod is hingedly in the second connecting rod X shape, in the link assembly of two adjacent groups, the second connecting rod in the first connecting rod and the adjacent link assembly is cut with scissors It connects；

The link assembly being connect with the driving lever be first connecting rod component, one end of the first connecting rod of the first connecting rod component with The driving lever is slide hinged, and the articulated shaft of first connecting rod and second connecting rod in the first connecting rod component is installed on the fixation Band body.

3. wearable device fixing belt according to claim 2, which is characterized in that the driving lever has strip-shaped hole, described Strip-shaped hole extends along the extending direction of the wearable device fixing belt, and the first connecting rod of the first connecting rod component has and institute The slide post of strip-shaped hole adaptation is stated, the slide post is slidably mounted on the strip-shaped hole；Or；

The first connecting rod of the first connecting rod component has strip-shaped hole, and the strip-shaped hole is prolonged along the wearable device fixing belt Direction extension is stretched, the driving lever has the slide post being adapted to the strip-shaped hole, and the slide post is slidably mounted on the bar shaped Hole.

4. wearable device fixing belt according to claim 2, which is characterized in that the driving mechanism includes linear motor One of mechanism, magnetic drive mechanism, traction mechanism, screw mechanism or gear and rack teeth mechanism are a variety of.

5. wearable device fixing belt according to any one of claims 1 to 4, which is characterized in that further include being coated on institute State the flexible cover sheet on the outside of support frame.

6. wearable device fixing belt according to claim 5, which is characterized in that the flexible cover sheet include rubber, One of silica gel or establishment band are a variety of.

7. wearable device fixing belt according to claim 1, which is characterized in that further include being connect with the control mechanism Control button, for the control button when being triggered, the control mechanism controls the control driving mechanism driving connecting rod Mechanism elongation is shortened.

8. a kind of wearable device, which is characterized in that including the described in any item wearable device fixing belts of such as claim 1-7 With the apparatus body with the fixed band connection of the wearable device.

9. wearable device according to claim 8, which is characterized in that at least one end of the wearable device fixing belt It is detachably connected with the apparatus body.

10. wearable device according to claim 9, which is characterized in that the wearable device fixing belt is set with described Standby ontology is clamped.

11. wearable device according to claim 9, which is characterized in that the apparatus body and the wearable device One end that fixing belt is detachably connected also has the first power supply terminal, and the wearable device fixing belt has to be supplied with described first Second power supply terminal of electric terminal adaptation connection, first power supply terminal are spring needle, and/or, second power supply terminal For spring needle.

12. wearable device according to claim 8, which is characterized in that the apparatus body is equipped with and the control machine The control button of structure connection, when being triggered, the control mechanism controls described in the driving mechanism driving control button Link mechanism elongation is shortened.

13. wearable device according to claim 8, which is characterized in that the apparatus body is equipped with and the control machine The virtual push button of structure connection drives the link mechanism elongation or shortening for controlling the driving mechanism.

14. wearable device according to claim 8, which is characterized in that the control machine of the wearable device fixing belt Structure is electrically connected with the apparatus body, when apparatus body detects the instruction for shortening wearable device fixing belt, control mechanism Controlling the driving mechanism drives the link mechanism to shorten；When apparatus body detects the finger of elongation wearable device fixing belt When enabling, control mechanism controls the driving mechanism and drives the link mechanism elongation.

15. wearable device according to claim 8, which is characterized in that it further include pressure sensor, the pressure sensing Device is set to apparatus body or wearable device fixing belt, and the body of the wearable device is worn in the pressure sensor detection Pressure between body region and the wearable device fixing belt；The control mechanism is detected according to the pressure sensor Pressure controls the driving mechanism and drives the link mechanism elongation or shorten.

16. wearable device according to claim 8, which is characterized in that the control machine of the wearable device fixing belt Structure is electrically connected with the apparatus body, and when wearable device detects prompting message, control mechanism controls driving mechanism and opens, Make fixed band body tightening.